Air purifying equipment and life detection method and device for filter screen in air purifying equipment

Abstract

The invention discloses air purifying equipment and a life detection method and device for a filter screen in the air purifying equipment. The life detection method comprises the following steps: acquiring the filtering efficiency and the filtering air volume percent of a filter screen, as well as the concentration of a target pollutant in air and the ventilation quantity and the running time of the air purifying equipment; according to the filtering efficiency and the filtering air volume percent of the filter screen, the concentration of the target pollutant in air and the ventilation quantity and the running time of the air purifying equipment, calculating the cumulative purification quantity M of the air purifying equipment; according to the cumulative purification quantity M of the air purifying equipment, calculating the clean air delivery ratio CADR of the air purifying equipment; judging whether CADR is smaller than a preset threshold; and if the CADR is smaller than the presetthreshold, sending prompt information to remind a user of replacing the filter screen. According to the life detection method, the actual service life of the filter screen in the air purifying equipment can be accurately estimated, the using effect of the filter screen is guaranteed, and the market competitiveness of the air purifying equipment is helped to be improved.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a method for detecting the life of a filter screen in air purification equipment, a device for detecting the life of a filter screen in air purification equipment, and an air purification equipment. Background technique [0002] In related technologies, the figure 1 The filter life calculation method shown. Such as figure 1 As shown, after the air purification equipment is turned on and running, it will automatically record the length of its working time and accumulate the value. Every certain period of time, the program will compare whether the accumulated total running time exceeds the preset value. If the accumulated total running time does not exceed the preset value, continue to accumulate the running time; if the accumulated total running time exceeds the preset value The preset value reminds the user to replace and clean the air purification filter, and after t...

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned technology does not consider the operating environment of the air purification equipment, that is, if figure 2 As shown, using the above filter life calculation method, no matter whether the air purification device works in an area with severe air pollution or in an area with good air quality, the preset filter use time is the same

However, the service life of the filter screen is actually determined by the cumulative pollutant purification capacity of the filter screen, that is, the cumulative quality of the pollutants intercepted by the filter screen. In areas with severe air pollution, the actual life of the filter screen is shorter. In areas with good air quality, the filter screen The actual life of the net is longer

If the life of the filter screen is calculated according to the above method, it will lead to serious attenuation or even failure of the filter screen in areas with severe air pollution. The replacement reminder has already appeared in the service life, resulting in a waste of filter life and unnecessary replacement and cleaning

[0004] All in all, the use load of the filter in the air purification equipment is mainly determined by the air environment factors in which it is located, and the above-mentioned filter life calculation method based on the use time cannot reflect the local air environment factors into the calculation of the filter life. , resulting in a deviation in the calculation of the life of the filter, which leads to the problem that the filter is still in use after failure or the life of the filter is wasted, and the replacement is too frequent

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